Routing machine



Jan. 24, 1928.

G. SCHRADE ROUTING MACHINE Filed May 5. 1927 3 Sheets-Sheet 1 .Ill lJan. 24, 1928.

G. SCHRADE ROUTING MACHINE Filed MayS 1927 3 Sheets-Sheet 2 Jan. 24,1928.

G. SCHRADE ROUTING MACHINE Filed May 5 1927 3 Sheets-Sheet 3 PatentedJan. 24, 1928.

PATENT OFFICE.

Gnome SGHRADE, or BRIDGEPOR'JJ, counncrxcu'r.

ROUTING Application filed. ma 5,

This invention relates to machines used for routing out space forinlaying work and more especially to that class of such machines adaptedto work on a thin piece of bone, ivory, wood or similar substance suchas is used for the covering ofthe handles of pocket knives, where it isrequired to produce a recess in said coverings for the inlay of a nameplate or shield.

My present improvements embody new and improved mechanism for holdingand operating the work and dies in combination with the chisels forrouting out the material in making the required platerecess. The chiselsused and the means for operation of such chisels are described inLettersPatent heretofore obtained by me, numbered 985,-

117. The present improvemcntsrelate particularly to the die and itsappurtenances for routing the space in the material operated upon andalso the means for receiving and holding said die in its place.

In the accompanying drawings Fig. 1 represents a side elevation of theentire routing machine with m improvements; Fig. 2 shows a left hancside view of Fig. 1.

Fig. 3 indicates an enlarged section of Fig. 1, on the line 3, 3;

Fig. 4 represents a section of Fig. 3 on the line 4; 4;

Fig. 5 shows die plate holder; b Fig. 6 indicates a Fig. 5;

Fig. die plate;

Fig. 8 is a side view of Fig. 7; Fig. 9 shows a. top plan View of thework or side cover to be operated upon;

Fig. 10 is a section of Fig. 9 on the line 10, 10 and Fig. 11 indicatesa perspective View of the plate which is to be inserted in the saidcover.

lea hand side view of The routing machine comprises a pedestal,

1, of any desired height and available construction, which has on itsface the gulde ways 2, and at its head a bracket 3 for the shaft 4 ofthe driving pulley 5.

Above the pedestal 1 and secured thereto i is an upright extension 6.Above the extension 6 and secured thereto is an outwardly extendingbracket 8, which terminates in a a bottom plan view of the upon, isreached the two tools, if two are 7 represents a topplan view of theMACHINE.

1927. Serial No. 189,018.

upper end of the spiral shaft. The extension I 6. at its top is alsoprovided with a fulcrum 11, in which is pivoted a link 12, to supportthe driver or walking beam 18, having the forked end 13 and which isactuated by means of the crank arm 14 on the shaft 4 through theconnecting link 15.

The forked end 13 has'pivoted therein a nut. not shown, through whichplays, when the walking beam 13, is actuated, a driving spiral shaft 17,the journal ends of which are j ournaled in the bearings 9 and 10. Atthe lower end of the spiral shaft 17 is an adjustable collar 18; whichis secured to the spiral shaft and forms a surface to support the sameon the bearing 10. A clamping lug 21., having the shank 21 and the heel22 is detachably connected to the head 20 and is provided with openingsfor the clamping screws 23. A tool holder 24, has formed therewith apair of openings 25, 26 for the upper ends of routing tools 27, one ofwhich onlyis shown. The screws 28, detachably clamp the upper ends ofthe routing tools to the holder 24.. When the Walking beam 13oscillates, the spiral shaft 17 is rotated first in one direction andthen in the reverse direct-ion.

Vhen the narrowest part of the mortise that isbeing cut in the materialoperated or two routing tools as the shape or size of the mortise to beout requires. I prefer to use only one tool or bit for the greaterportion of the work. It must be understood that in speaking of therouting chisels the work tool. or tools, are used to designatesubstantially the same thing, two chisels making up the routing toolwhen the style or size of the space in the die permits.

In the face 6 of the extension 6 is fastened the rack plate 29 havingthe rack teeth 29. Dovetail guides 80are formed on the opposite sides ofthe base 6. A movable frame 31 is indicated with the head 32. A 1vertical guide slot having the beveled end 33 i and straight end 33, isformed in the frame 31. A second vertical guide slot having the beveledends 34: and 34 is also formed in the frame 31. it gib 35 is locatedbetween the straight end 33, and its accompanying dovetail guide 30. Apair of bolts 36 of which only one shown extend through" the gib 35 andare in threaded engagement with the frame ill. A screw 3? has fastenedthereto a socket 37" having the handle 37?. The screw 37 is in threadedengagement with the frame- 31 and bears against the gib 35 to properlyadjust the latter and maintains the frame 31 in proper position A cavity38 is formed in the head 32, and a pinion 39 is located in said cavityiA shaft -O having the shank i1 oli an small diameter is journaled in thehead: 32. A key 42 fastens the said pinion to theshank. 45.1. Anoperating hand wheel ail fastened to the shaft ell). The pinion: S9meshes with the rack teeth :29. By means of the said pinion and its appurtenancesthe il ranie 31 can be located at ditlerent levels, and bymeans of the handle 37" said frameean be locked in operative position.

A movable slide indicated with the leg it. having the longitudinaldovetail sides 44 and 454:". The said bracket has one side bearingagainst the end ill of the vertical guide slot and its other sideagainst the gib -14, which latter in turn bears against the beveled end34. Screws 4%, only one. of which shown, bear against the g ib-id a Apin to extends trom the frame 31 and enters a guide opening 46 in theleg 44. A foot 4'? is formed with. the leg, 44:. A projecting; arm- 48-is detaehably fastened to the top face of the head 32, by means of thescrews 49. An adjusting screw 50 is in threaded engagement with the arm48- and a jam nut 51' is provided for the screw 50, which latter isadapted to bear on the top face of the leg. 4 L to vertically adjust thelatter relatively to frame 31. By means of thcscrews ell the leg 44canbe adjusted so it will slide freely vertically without lost motion.

A die plate holder is indicated in its entirety by the body portion 53having the elongated opening 54:. A thickened end 55 having the beveled.inner locking edge 56 is formed with the body portion A bolt opening571's formed in the thickened end as shown at 58 and has formedtheiiewith the spring member 59 having the beveled inner locking edge(30: 'A bolt opening 61L is formed in the: thickened portion. The innerface 552 and the inclined locking edges 56 and 60 constitutea seat forthe die plate to be described. The die plate holder 52 is detachablyfastened to the foot l7 by means of bolts 61, and 6L, the face 52" ot"the die holder bears against the under face of said foot 47.

Secured to the guide way 2 of the pedestal l is a sliding block (55,which can be clamped in different positions by means of the set screw66. A rack bar (38 is slidably guided in the block 65 and has the table69 at its upper end. A block T0 is fastened to the table 69 by means ofthe bolts 71.. A work holder 72 is pivoted to the block 70 by means ofthe pivot 73. The "work holder 72 is recessed on its upper face for theplates 78 which are clamped in position by means of the bolts 79. llolding; pins 80 extend upwardly from; the plates 78 audi are intendedto fit into holes in the covers to he described. By means of this1onstruction the work: holder 72 is enabled to tilt to adjust itselfi toinequalities of the covers The plates 78 are: slotted for the passage ofthe bolts 79, to' penmit adjustment. The work holder 72 can rock or tiltfor the purpose 01? allowing a: small degree of tneedom of movement forthe inequalities in the thickness along the length of the coversoperated upom so the bottom of the cavity will be parallel to the top ofthe covers. The die plate is indicated at 82 with the beveled ends 83and the die opening; 85; The cover to be operated: upon is imlicated at86 with the openings 87, and the recessed cavity which has been made bythe routing tool. 27 through theopening- 85 ot the die plate Q12.

A shaft 90 isjournaled in the block (3.3;. A handle 91 is fastened toone end of the shaft 90 and to its other end fastened the crank arm Thepinion; .73 which meshes with the teeth-0t the rack bar 68, is fastenedtothe shaft 90 in order to raise amt lower the work: holdeu T2 with itsapp]u'tena-nccs. The crank arm 9:2 has extending from its inner fa re as-tml 96. The latter plays in a recess 97 of a slide bar 08 supported ina bolt 99 A bracket 100 extends from the block (15 and haspivotedthereon, the bell crank lever 10]. which has a forked end (not shown),that fits a pin; (notshown) carried by the ba r ()8. The other arm 102of the bell crank lever aetuates the bell shitter 103 which slides onthe piiu 104 that extends from the pedestal 1. hen the work holder iselevated by means of the handle 9i the belt lib: is thereby shifted fromthe loose 'iulley hit; to the tight pulley 107. as fully described in:my Patent No. 985 117 and the operations of routing immediately beginbut only continue as long as the work holder Til is elevated and thetool or tools are working upon the coner 86.. Simultaneously with thedropping of the work holder the belt is autolmiticallv shifted to theloose pulley '1 (l6; and the rout ing tool 27 comes to a rest.

To locate the die plate 82 in the die plate holder it pushed la-tweenthe locking edges 56 and till. The die plate 852 is then tightly clampedin place.

- die plate seated: in the die plate holder, ti laandtl By this meansthe? spring member 59' is brought together and the die plate 82 'is Thecover 86 is next located upon the plates 78, 2, with its openings 87engaged by the pins 80.

The plate 110, for the knife cover preferably having the openings 111may be then readily located in the routed cavity 88 and fastened inplace by cement or by pins extending from the cover 86.

It will be observed that in my new construction the die plate holder,52, and its appurtenances are held fixedly attached to the sliding frame31 whilst the dies may be readily removed by loosening the nuts on thescrews 61 and 61 and other dies for the routing of various shapessubstituted.

I claim:

-1. In a machine of the class described a routing tool rotativelysupported therein, a movable frame slidably supported in the machine, adie plate holder carried by said frame, said holder having a springmember to clamp a die plate thereto and means for securing the die platein the holder substantially as shown and described.

2. In a machine of the class described the combination of a routing toolrotatively supported therein, means to rotate the routing tool inreversed directions, a movable frame slidabl supported in the machine, adie plate older carried by said 'ame, said holder having a retainingspring member, a adapted to be locked to said holder, means to fastensaid die plate holder to said frame, said means simultaneously clampingsaid die plate to said holder.

3. In a machine of the class described the combination of a routing toolsupported therein, means to rotate the routing tool in reverseddirections, a die plate holder having an opening, fastened in themachine and disposed so that the routing tool extends through itsopening, said die plate holder having a locking edge at one portionthereof, and having a thickened end spaced from said locking edge, aspring member formed with said thickened end, said spring member havinga beveled locking edge and a die plate having a work opening, adapted tobe detachably clamped to said holder, substantially as and for thepurpose shown and dc scribed.

4. In a machine of the class described the combination of a routingtool, means to rotate said tool in reversed directions, a die plateholder having an opening for the pas sage of the routing tool detachablysup ported in the machine, said die plate holder having a beveledlocking edge at one portion thereof, a spring member having a beveledlocking edge formed with the die plate holder, and spaced from the otherlocking edge, a die plate having beveled edges and a work opening-"for'saidxliold'er, with itssbeveled edges adapted to engage the:lockingedges of the holder, substantially as and for the purposes shownand described. 7 i i i 5. In a machme ofthe .classdescribed thecombination of an extension-supported therein, a movable frame in'slidable' relation to said extension, means to clamp the frame atdifferent levels to said extension, a, bracket in slidable relation tosaid movable frame, ferent positions, means to clamp said bracket tosaid frame and a die plate holder detachably connected to said bracket,substantially asand for the purposes shown and described. p

6. In a machine of the class described the combination of an extensionsupported therein, a movable frame in slidable relation to saidextension, a rack plate connected to said extension, a pinion journaledto said frame and in mesh with rack plate, means to clamp the frame atdifferent levels to said extension, a bracket slidably connected to saidframe, an adjust ing screw extending from said frame and adapted to bearagainst said bracket to ad just the latter relatively to said frame anda die plate holder detachably connected to the frame. I

7. In a machine of the class described the combination of an extensionsupported therein, a movable frame in slidable relation to saidextension a rack plate connected to said extension, a pinion journaledto said frame in mesh with the teeth of the rack plate, means to turnthe pinion, a gib interposed between the frame and extension,

the teeth of said means to adjust said bracket in dif- V e means toclamp the frame, the gib and exsubstantially as and described.

8. In a machine of the class described the combination of an extensionsupported therein, a movable frame in slidable relation to saidextension, a rack plate connected to said extension, a. pinion journaledto said frame in mesh with the teeth of the rack plate, means to turnsaid pinion and thereby run the frame in reversed directions, means toclamp the said frame in different positions, a bracket in slidablerelation to said frame, means to clamp the bracket in differentpositions, a die plate holder detachably connected to the bracket, a dieplate detachably secured to said holder and a work holder in movablerelation to said die plate holder, substantially as and 7 said frame andadapted to adjust the bracket in different positions, and for thepurposes shown tion to said extension, a rack plate connected to saidextension, a pinion journaled to said frame in mesh with the teeth ofthe rack plate, means to turn the pinion and thereby 5 run the frame inreversed directions, means to clamp the frame bracket in slidable indifi'erent positions, a relation to said frame,

